The problem is, he's either late or completely flakes, so it took four attempts to get to record his part.
According to band members, he already wasn't looking very good when he came to record his part.
It's allowed band members who don't like each other to record their parts in separate studios and never see one another.
He recorded his part last November while on a visit to California.
The members recorded their individual parts effectively as session musicians.
Each player recorded their part in roughly five minutes and spent the next hour writing autographs for the staff.
For technical reasons voice actors usually record their parts alone, without other performers to react to.
The group had just recorded their part in a new Central series which starts on Wednesday.
Stevens wanted to record his parts using one track, and avoid any overdubbing.
Due to the tight and conflicting schedules of both members, they have to record their parts at different sessions.